<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <title>toy</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
	<form action="mail/upload" method="post" enctype="multipart/form-data">
	    <p><input type="file" name="file"></p>
	    <p><input type="submit" value="提交"></p>
	</form>
</body>
</html>